Plasma concentration profiles of SF (A), SF-GSH (B) after a single oral administration of 2.5 mg/g body weight of three different broccoli sprout preparations in mice (mean ± SD, n = 3). Blood samples were collected from each mouse by terminal cardiac puncture at pre-dose and 0.5, 1, 2, 4, 6, 8, 12, and 24 h post-dose, and the plasma fraction was immediately separated. The concentrations of SF and SF-GSH were determined by LC-MS/MS.